Photoionization with excitation and double photoionization of the helium isoelectronic sequence
Abstract
We perform a systematic study of photoionization with excitation and double photoionization of H-, He, and Li+ using the convergent close-coupling formalism. The present calculations cover the photon energy range from the double-ionization threshold to 10 keV where the results go over continuously to the nonrelativistic limit of infinite photon energy. By consideration of scaling properties, tested by application to O6+, accurate nonrelativistic results for photoionization with excitation to arbitrarily high n and double photoionization may be obtained for all heliumlike targets.
- Publication:
-
Physical Review A
- Pub Date:
- December 1998
- DOI:
- 10.1103/PhysRevA.58.4501
- Bibcode:
- 1998PhRvA..58.4501K
- Keywords:
-
- 34.80.Kw;
- 32.80.Fb;
- Electron-ion scattering;
- excitation and ionization;
- Photoionization of atoms and ions